CN101177142A - Self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon - Google Patents
Self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon Download PDFInfo
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- CN101177142A CN101177142A CNA2007103050958A CN200710305095A CN101177142A CN 101177142 A CN101177142 A CN 101177142A CN A2007103050958 A CNA2007103050958 A CN A2007103050958A CN 200710305095 A CN200710305095 A CN 200710305095A CN 101177142 A CN101177142 A CN 101177142A
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Abstract
The invention discloses a funnel and self-clearing type truck transmission mechanism for opening and closing the bottom door, comprising a transmission shaft, a transmission shaft lever, a bottom door connecting rod, a door opening lever device, a door closing lever device as well as a secondary locking device, which is characterized in that the transmission shaft is arranged on the frame; the transmission shaft lever is arranged vertically on the transmission shaft; the bottom door connecting rod used to connect the bottom door of the funnel type truck , is hinged with the end of the transmission shaft lever; the door opening lever device and the door closing lever device are arranged at the two ends of the transmission shaft; the secondary locking device comprises a lockpin; the lockpin is used to lock the permanent seat on the truck which is relative to the transmission shaft to prevent the transmission shaft turning when the door is closed. The invention has the advantages of opening and closing automatically and preventing effectively the bottom door from unexpectedly opening.
Description
Technical field
The present invention relates to the transmission device that a kind of hopper car bottom door is used, is a kind of self lighting type bottom door transmission device.
Background technology
The unloading of existing vehicle shipment loose goods mainly contains following three kinds of modes: the first tumbles car load from the loading hatch unloading, and the unloading mode is original and need special-purpose unloading aid, and operation inconvenience and cost are higher; It two is to utilize spiral equipment to unload from vehicle side door, needs special-purpose unloading aid and through unloading rate low; It three is to utilize goods deadweight from the bottom door unloading, need not special-purpose unloading aid and through unloading rate height, and railway hopper car adopts this mode to unload.
Existing railway hopper car bottom door opening and closing has various ways: two machete formula eccentric lock locking mechanisms of first the seventies in last century development and design.Form by bearing, funneling bottom door, knife bar, lower shaft and toggle linkage.This device can be by wind control unloading, also manual artificial discharging.But this structure has been found two common problems in utilization: the one, bottom door locking mechanism poor reliability, during operation owing to reason bottom doors such as vibration to open problem comparatively serious.The 2nd, bottom door opener unstable properties, part opening door of vehicle resistance is excessive, occurs car door sometimes and does not open or open situation of difficult.
Chinese patent literature CN2659767Y discloses another kind of funneling railway truck bottom door opening and closing mechanism: the connecting rod that opens the door, the sleeve that opens the door are linked in sequence with the pinch roller that opens the door and form the leverage that opens the door; Close the door connecting rod, the sleeve of closing the door is linked in sequence with the pinch roller of closing the door and forms the leverage of closing the door; The connecting rod that opens the door is equipped with a roller respectively with the connecting rod outer end of closing the door; The leverage that opens the door is fixed on the transmission shaft two ends with the leverage of closing the door by the sleeve that opens the door, the sleeve of closing the door, and the pinch roller that opens the door, the pinch roller of closing the door are positioned at the last plane of transmission shaft lever.This mechanism may realize opening certainly with self-closing of bottom door, and is easy to use, but this mechanism is except that having the low deficiency of complex structure, driving efficiency, same exist owing to do not have the locking device vehicle in utilization owing to oneself phenomenon of opening of bottom door often takes place reasons such as vibration.
Summary of the invention
The problem of opening certainly at the existence of bottom door opening and closing mechanism, the objective of the invention is to existing funneling railway truck self lighting type bottom door opening and closing transmission mechanism is improved, this transmission device can be realized from unloading, self-closing door, and have secondary locking function, in the goods transport process, thoroughly avoid because of bottom door from opening particularly serious accidents such as causing the circuit stoppage in transit.
To achieve these goals, the present invention adopts following technical scheme: a kind of self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon, comprise a transmission shaft that is installed on the vehicle frame, be fixed with perpendicular transmission shaft lever on the transmission shaft, the transmission shaft lever end is hinged with and is used for and funneling lorry bottom door bonded assembly bottom door connecting rod, the transmission shaft two ends are fixed with the open the door leverage and the leverage of closing the door, also comprise a secondary locking device, comprise a lock pin, be used for described transmission shaft is prevented to rotate at the state transmission shaft of closing the door with respect to the permanent seat locking on the lorry.
This secondary locking device can adopt following scheme: described lock pin is installed in this sleeve, retracing spring also is housed in the sleeve, retracing spring one end acts on the lock pin lock pin to extrapolation, it is protruding in described sleeve to be connected with a connecting rod on the lock pin, respective link position on the sleeve have elongated slot make connecting rod can guarantee in elongated slot that lock pin stretches out when mobile and the sleeve of withdrawing in.
This self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon of the present invention, owing to increased the secondary locking device, can utilize this secondary locking device to prevent from bottom door to occur from opening phenomenon because of the funneling railway truck accident of reasons such as vibration at the state of closing the door, reliability of service is good, has improved traveling security.
Description of drawings
Fig. 1 is the structural representation of self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon of the present invention.
Fig. 2 is the structural representation of secondary locking device.
Fig. 3 is a self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon running condition scheme drawing of the present invention.
Fig. 4 is the self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon shown in Figure 3 principle schematic of opening the door.
Fig. 5 is the self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon shown in Figure 3 spacing scheme drawing of state of closing the door.
Fig. 6 is a self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon door opening state scheme drawing shown in Figure 3.
Fig. 7 is the self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon shown in Figure 3 principle schematic of closing the door.
Fig. 8 is the self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon shown in Figure 3 view of closing the door.
Among the figure: 1, roller, 2, the connecting rod of closing the door, 3, transmission shaft, 4, the bottom door connecting rod, 5, toggle linkage, 6, the secondary locking device, 7, the connecting rod that opens the door, 8, roller, 9, permanent seat, 10, axle bed, 11, screw rod,
20, the contact that opens the door, 30, the contact of closing the door,
61, sleeve, 62, retracing spring, 63, lock pin, 64, connecting rod, 65, wheel trolley, 66, elongated slot.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing and a preferred embodiment, to help understanding content of the present invention.
According to Fig. 1 and shown in Figure 3, self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon comprises a transmission shaft 3 that is installed on the vehicle frame, be fixedly connected with perpendicular transmission shaft lever on the transmission shaft 3, the transmission shaft lever is two groups of toggle linkages 5 in the present embodiment, toggle linkage 5 ends are hinged with and are used for and funneling lorry bottom door bonded assembly bottom door connecting rod 4, the transmission shaft two ends are fixedly connected with the leverage of closing the door that the roller 1 that opens the door leverage and installed by the close the door connecting rod 2 and connecting rod 2 ends of closing the door that the roller 8 by the open the door connecting rod 7 and connecting rod 7 ends of opening the door constitutes constitutes.Also comprise a secondary locking device 6, by lock pin with moving axis 3 with respect to tabular permanent seat 9 lockings on the lorry, prevent to rotate, to avoid the unexpected bottom door of opening at the state transmission shaft 3 of closing the door.
The secondary locking device can be simple latch structure, manually lock and unlock.As a preferred embodiment, as shown in Figure 2, it is a kind of secondary locking device that can automatic unlocking, comprise a sleeve 61, a lock pin 63 is contained in this sleeve 61, the retracing spring 62 that makes lock pin 63 keep protruding certain-length also is housed in the sleeve 61, retracing spring 62 moves freely end and acts on the lock pin 63, it is protruding outside sleeve 61 to be welded with a connecting rod 64 on the lock pin 63, the respective link position has elongated slot 66 and is used to make connecting rod 64 to pass on sleeve 61, and the position of elongated slot 66 and length make and can guarantee that when connecting rod 64 is mobile in elongated slot lock pin 63 stretches out certain-length and locks with realization and be withdrawn in the sleeve 61 with release.Because the effect of secondary locking device is to lock transmission shaft 3 is relative with the lorry vehicle frame, therefore sleeve 61 can be welded on the tabular permanent seat 9 on the vehicle frame, be in the lorry bottom door position of closing the door, there is the locking hole that inserts lock pin the position of corresponding lock pin on the connecting rod 7 that opens the door of the leverage that opens the door.Because permanent seat 9 is to be fixed on the lorry vehicle frame, when the locking hole on connecting rod 7 is opened the door in lock pin 63 insertions was in lock position, transmission shaft 3 can't rotate like this, and bottom door also just can't be opened.When the lock pin 63 of pulling back is withdrawn it in the connecting rod 7 that opens the door of the leverage that opens the door, finishing release by connecting rod 64.
Same reason also can be fixed on the secondary locking device on transmission shaft one side or its assembly, for example is fixed on the leverage that opens the door, and on tabular permanent seat 9 locking hole is set.
Because what the present invention relates to is the self lighting type bottom door, adapt to it and also can a wheel trolley 65 be installed on the connecting rod of secondary locking device, wheel trolley 65 is lower than described transmission shaft 3, so that the ground contact effect of opening the door.With reference to Fig. 4 and in conjunction with shown in Figure 1, the secondary locking device cooperates with the contact 20 that opens the door that fixes on the ground, and open the door contact side and transmission shaft 3 are the acute angle angle, forms an inclined-plane, when lorry moves to the contact 20 that opens the door, utilize this inclined-plane to push away lock pin by wheel trolley 65 and connecting rod 64.
In the present embodiment, the connecting rod 2 of closing the door that company in the bar thick stick device opens the door in the bar 7 and the leverage of closing the door that opens the door is directly to be welded on the transmission shaft 3, and lay respectively at the both sides of transmission shaft 3, the roller 1 that is positioned at transmission shaft 3 both sides is parallel with the transmission shaft axle center with the wheel shaft of roller 8, this leverage directly produces torque to transmission shaft, not only structure is simpler the mode in CN2659767Y, and driving efficiency is higher.
In conjunction with Fig. 1, Fig. 6 and shown in Figure 8, the transmission shaft lever is two groups of toggle linkages that be arranged in parallel 5 that are fixed on the transmission shaft 3, toggle linkage 5 is vertically vertical with transmission shaft 3 and stretch out to the transmission shaft both sides, toggle linkage 5 one ends are used for the distance H of the axis hole and the transmission shaft 3 of hinged bottom door connecting rod 4, do not wait with the axis hole of the other end and the distance h of transmission shaft, form eccentric structure, and the axle center of two axis holes and transmission shaft 3 is not also on same straight line, to form eccentric self-locking structure.Adopt two groups of toggle linkages,, when the lorry base plate is longer, make bottom slab stress more reasonable with respect to one group, otherwise can be higher to the base plate rigidity requirement.And adopt more than two groups, require axis hole position and bottom door length of connecting rod to want consistent, increased assembling and production difficulty.
As shown in Figure 3, axle bed 10 and the bearing by the lorry bottom is installed in the railway truck bottom of frame with transmission shaft 3 during use.In conjunction with Fig. 5 and shown in Figure 8, owing to there is eccentric throw, make and under bottom door deadweight and goods action of gravity, produce the anti-clockwise torque, and owing to have and be fixed on connecting rod 7 other ends that open the door that the ejector pin that is made of spacing screw rod 11 on the tabular permanent seat 9 withstands in the leverage that opens the door and carry out spacing the rotating counterclockwise at the state lower drive shaft of closing the door that prevent, simultaneously also there is the inhibiting device that constitutes by screw rod to prevent that transmission shaft from rotating counterclockwise at connecting rod 2 opposite sides of closing the door, therefore transmission shaft can't open bottom door by clickwise, constitutes the one-level self-locking device.And the secondary locking device with transmission shaft with respect to permanent seat 9 lockings, even vibration transmission shaft make to take place again also can not rotate, guaranteed that bottom door can't unexpectedly be opened when not unblanking.On the spacing screw rod 11 jam nut can also be housed,, adjust the rotational angle of transmission shaft to be used to adjust the screw rod collapsing length.Certainly, inhibiting device also can be modes such as a fixing baffle plate, piece, but adopts bolt and lock nut to cooperate, and has controllability.
The process of opening the door such as Fig. 4, Fig. 5, Fig. 6 and in conjunction with Fig. 1, shown in Figure 2, wheel trolley 65 in the locking device 6 at first with the contacts side surfaces of the ground-surface contact 20 that opens the door, after vertically reaching certain displacement, push wheel trolley 65 contact 20 sides of opening the door on ground, wheel trolley 65 will drive lock pin 63 by connecting rod 64 and withdraw from from the locking hole of the connecting rod 7 that opens the door, thus release; Along with vehicle continues reach, when the roller 8 on the connecting rod 7 that opens the door contacts with driving surface on the ground-surface contact 20 that opens the door and during along the slope upward movement, the slope acts on the connecting rod 7 that opens the door by roller 8 lifts its end gradually, transmission shaft 3 is clockwise rotated, after reaching certain stroke, and overcome eccentric throw, remove support by the rotation of toggle linkage 5 and bottom door connecting rod 4 during transmission shaft 3 rotations to bottom door, this moment bottom door by goods deadweight open automatically and unload until state shown in Figure 6.By the ramp height of eccentric throw size and the ground-surface contact that opens the door is set, can adjust the complexity of opening the door, to guarantee that unlatching flexibly.
At closing time, with the same reason of opening the door, the wheel trolley in the locking device also at first with the ground contact contacts side surfaces of closing the door, utilize the inclined-plane of the side of the contact of closing the door to push wheel trolley, make wheel trolley will drive lock pin and contract to the position of closing the door, do preparation for locking; Close the door process as shown in Figure 7, close the door that roller 1 and ground on the connecting rod 2 closes the door on the contact 30 that driving surface contacts and along the slope upward movement, this process utilizes the effect on the inclined-plane connecting rod 2 that promotes to close the door to drive transmission shafts 3 and rotate counterclockwise, in conjunction with forming certain eccentric shaft distance excessively behind the dead point excessively shown in Figure 8, simultaneously transmission shaft 3 back into close the door position by bottom door connecting rod 4 with bottom door by toggle linkage 5, thereby has finished the SELF CL of bottom door.Under action of reset spring, insert the connecting rod that opens the door during locking hole in the process of closing the door on the lock pin subtend is opened the door connecting rod and realize automatic locking.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon, comprise a transmission shaft that is installed on the vehicle frame, be fixed with perpendicular transmission shaft lever on the transmission shaft, the transmission shaft lever end is hinged with and is used for and funneling lorry bottom door bonded assembly bottom door connecting rod, the transmission shaft two ends are fixed with the open the door leverage and the leverage of closing the door, it is characterized in that: also comprise a secondary locking device, comprise a lock pin, be used for described transmission shaft is prevented to rotate at the state transmission shaft of closing the door with respect to the permanent seat locking on the lorry.
2. self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon according to claim 1, it is characterized in that: described secondary locking device comprises a sleeve, described lock pin is installed in this sleeve, retracing spring also is housed in the sleeve, retracing spring one end acts on the lock pin lock pin to extrapolation, it is protruding in described sleeve to be connected with a connecting rod on the lock pin, respective link position on the sleeve have elongated slot make connecting rod can guarantee in elongated slot that lock pin stretches out when mobile and the sleeve of withdrawing in.
3. self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon according to claim 2 is characterized in that: be horizontally installed with a wheel trolley on the connecting rod of described secondary locking device, described wheel trolley is lower than described transmission shaft; Also comprise a contact that opens the door that fixes on the ground, the contact side of opening the door is the inclined-plane that is the acute angle angle with described transmission shaft, and described wheel trolley can be withdrawn in the sleeve described lock pin with the contacts side surfaces of the described contact that opens the door and the contact that opened the door extruding.
4. according to claim 2 or 3 described self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon, it is characterized in that: described sleeve is mounted on the permanent seat on the corresponding lorry, be in the lorry bottom door position of closing the door, there is the locking hole that inserts lock pin corresponding lock pin position on the described leverage that opens the door.
5. according to claim 2 or 3 described self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon, it is characterized in that: described sleeve is described transmission shaft one side of installation or is installed on the described leverage that opens the door, be positioned at the lorry bottom door position of closing the door, there is the locking hole that inserts lock pin corresponding lock pin position on the permanent seat of described lorry bottom.
6. according to described self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon one of in the claim 1 to 3, it is characterized in that: the described bar thick stick device that opens the door is made of the roller of installing on the open the door connecting rod and the connecting rod that opens the door that are fixedly connected on described transmission shaft one end, and the wheel shaft of roller is parallel with described transmission shaft.
7. self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon according to claim 6, it is characterized in that: the described bar thick stick device of closing the door is made of the roller of installing on the close the door connecting rod and the connecting rod of closing the door that are fixedly connected on described transmission shaft one end, and the wheel shaft of roller is parallel with described transmission shaft.
8. self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon according to claim 7, it is characterized in that: described transmission shaft lever is the toggle linkage that is fixed on the transmission shaft, described toggle linkage is vertically vertical with transmission shaft and stretch out to the transmission shaft both sides, be positioned at the axis hole and the different formation eccentric structures of described transmission shaft distance of two hinged described bottom door connecting rods in end of toggle linkage, and the axle center of described two axis holes and described transmission shaft is not on same straight line.
9. self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon according to claim 8 is characterized in that: described toggle linkage is two groups, be arranged in parallel.
10. according to described self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon one of in the claim 1 to 3, it is characterized in that: also comprise the inhibiting device that is fixed on the lorry bottom of frame, withstand on restriction transmission shaft rotational angle on the described transmission shaft lever or the leverage that opens the door, the leverage of closing the door.
11. self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon according to claim 10 is characterized in that: described inhibiting device is a spacing screw rod that is contained in the lorry bottom of frame, and jam nut is arranged on the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007103050958A CN100548765C (en) | 2007-12-27 | 2007-12-27 | Self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007103050958A CN100548765C (en) | 2007-12-27 | 2007-12-27 | Self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101177142A true CN101177142A (en) | 2008-05-14 |
| CN100548765C CN100548765C (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007103050958A Active CN100548765C (en) | 2007-12-27 | 2007-12-27 | Self-tipping type bottom door opening and closing transmission mechanism of funnel type wagon |
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| CN (1) | CN100548765C (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765399A (en) * | 2012-08-07 | 2012-11-07 | 南车长江车辆有限公司 | Opening-closing device for bottom door of vehicle |
| CN103303323A (en) * | 2013-06-17 | 2013-09-18 | 包头北方创业股份有限公司 | Bottom door opening-closing mechanism for railway funnel type goods vehicle |
| CN103303324A (en) * | 2013-07-01 | 2013-09-18 | 齐齐哈尔轨道交通装备有限责任公司 | Bottom door opening/closing mechanism and bottom door wagon |
| CN103587538A (en) * | 2013-11-15 | 2014-02-19 | 南车长江车辆有限公司 | Secondary locking device, hopper vehicle bottom door and hopper vehicle |
| CN104179406A (en) * | 2014-07-20 | 2014-12-03 | 马忠国 | Locking mechanism |
| CN104309614A (en) * | 2014-10-15 | 2015-01-28 | 南车眉山车辆有限公司 | One-way automatic-discharging hopper wagon |
| CN104590292A (en) * | 2014-12-15 | 2015-05-06 | 齐齐哈尔轨道交通装备有限责任公司 | Railway freight car door opening and closing system and two-stage locking device thereof |
| WO2015070721A1 (en) * | 2013-11-15 | 2015-05-21 | 南车长江车辆有限公司 | Link type secondary locking device, hopper car bottom door and hopper car |
| CN104648414A (en) * | 2015-02-04 | 2015-05-27 | 南车眉山车辆有限公司 | Bottom door locking system of railroad hopper car |
| CN104890687A (en) * | 2015-06-16 | 2015-09-09 | 齐齐哈尔轨道交通装备有限责任公司 | Railway wagon body and bottom door locking mechanism thereof |
| CN105216807A (en) * | 2015-11-12 | 2016-01-06 | 南车资阳机车有限公司 | The non-maintaining collision system of a kind of ore hopper car shedding mechanism |
| CN105329246A (en) * | 2015-11-18 | 2016-02-17 | 南车长江车辆有限公司 | Bottom door opening and closing mechanism with adjustable door opening space |
| CN105329247A (en) * | 2015-11-30 | 2016-02-17 | 南车长江车辆有限公司 | Bottom door anti-theft device of railway grain hopper wagon |
| CN105644571A (en) * | 2015-12-29 | 2016-06-08 | 齐齐哈尔轨道交通装备有限责任公司 | Hopper car, bottom door opening and closing mechanism and two-stage locking device |
| WO2017107675A1 (en) * | 2015-12-25 | 2017-06-29 | 中车长江车辆有限公司 | Hopper car body and hopper car for railway coal transportation |
| CN109398381A (en) * | 2018-12-11 | 2019-03-01 | 中车眉山车辆有限公司 | A kind of hopper wagon side door open and close system |
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| US3738511A (en) * | 1971-03-12 | 1973-06-12 | Pacific Car & Foundry Co | Convertible railway hopper car |
| US4084515A (en) * | 1976-09-16 | 1978-04-18 | Pullman Incorporated | Locking mechanism for hopper door actuator assembly |
| CN2659767Y (en) * | 2003-01-17 | 2004-12-01 | 中国北车集团齐齐哈尔铁路车辆(集团)有限责任公司 | Hopper van bottom door open/close mechanism |
| CN200957816Y (en) * | 2006-10-25 | 2007-10-10 | 中国北车集团太原机车车辆厂 | Ballast copper wagon |
| CN200981556Y (en) * | 2006-12-27 | 2007-11-28 | 中国南车集团眉山车辆厂 | Transmission and opening-closing device for bottom door hopper wagon |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765399A (en) * | 2012-08-07 | 2012-11-07 | 南车长江车辆有限公司 | Opening-closing device for bottom door of vehicle |
| CN103303323A (en) * | 2013-06-17 | 2013-09-18 | 包头北方创业股份有限公司 | Bottom door opening-closing mechanism for railway funnel type goods vehicle |
| CN103303323B (en) * | 2013-06-17 | 2015-12-23 | 包头北方创业股份有限公司 | A kind of railroad hopper formula lorry bottom door opening and closing mechanism |
| CN103303324B (en) * | 2013-07-01 | 2015-08-26 | 齐齐哈尔轨道交通装备有限责任公司 | A kind of bottom door opening and closing mechanism and end enabling railway truck |
| CN103303324A (en) * | 2013-07-01 | 2013-09-18 | 齐齐哈尔轨道交通装备有限责任公司 | Bottom door opening/closing mechanism and bottom door wagon |
| CN103587538A (en) * | 2013-11-15 | 2014-02-19 | 南车长江车辆有限公司 | Secondary locking device, hopper vehicle bottom door and hopper vehicle |
| WO2015070721A1 (en) * | 2013-11-15 | 2015-05-21 | 南车长江车辆有限公司 | Link type secondary locking device, hopper car bottom door and hopper car |
| CN103587538B (en) * | 2013-11-15 | 2016-08-17 | 中车长江车辆有限公司 | A kind of secondary latch closes device, hopper wagon bottom door and hopper wagon |
| US10640133B2 (en) | 2013-11-15 | 2020-05-05 | Crrc Yangtze Corporation Limited | Connecting rod type two-level locking device, hopper car bottom door and hopper car |
| CN104179406A (en) * | 2014-07-20 | 2014-12-03 | 马忠国 | Locking mechanism |
| CN104309614A (en) * | 2014-10-15 | 2015-01-28 | 南车眉山车辆有限公司 | One-way automatic-discharging hopper wagon |
| CN104590292A (en) * | 2014-12-15 | 2015-05-06 | 齐齐哈尔轨道交通装备有限责任公司 | Railway freight car door opening and closing system and two-stage locking device thereof |
| CN104590292B (en) * | 2014-12-15 | 2017-04-12 | 中车齐齐哈尔车辆有限公司 | Railway freight car door opening and closing system and two-stage locking device thereof |
| CN104648414A (en) * | 2015-02-04 | 2015-05-27 | 南车眉山车辆有限公司 | Bottom door locking system of railroad hopper car |
| CN104890687A (en) * | 2015-06-16 | 2015-09-09 | 齐齐哈尔轨道交通装备有限责任公司 | Railway wagon body and bottom door locking mechanism thereof |
| CN105216807A (en) * | 2015-11-12 | 2016-01-06 | 南车资阳机车有限公司 | The non-maintaining collision system of a kind of ore hopper car shedding mechanism |
| CN105329246A (en) * | 2015-11-18 | 2016-02-17 | 南车长江车辆有限公司 | Bottom door opening and closing mechanism with adjustable door opening space |
| CN105329247A (en) * | 2015-11-30 | 2016-02-17 | 南车长江车辆有限公司 | Bottom door anti-theft device of railway grain hopper wagon |
| WO2017107675A1 (en) * | 2015-12-25 | 2017-06-29 | 中车长江车辆有限公司 | Hopper car body and hopper car for railway coal transportation |
| CN105644571A (en) * | 2015-12-29 | 2016-06-08 | 齐齐哈尔轨道交通装备有限责任公司 | Hopper car, bottom door opening and closing mechanism and two-stage locking device |
| CN105644571B (en) * | 2015-12-29 | 2018-07-03 | 中车齐齐哈尔车辆有限公司 | A kind of hopper wagon, bottom door opening and closing mechanism, two level locking device |
| CN109398381A (en) * | 2018-12-11 | 2019-03-01 | 中车眉山车辆有限公司 | A kind of hopper wagon side door open and close system |
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| CN100548765C (en) | 2009-10-14 |
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Address after: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee after: CRRC QIQIHAR VEHICLE CO., LTD. Address before: 161002 Heilongjiang province Qigihar Tiefeng District Plant Road No. 36 Patentee before: Qiqihar Rail Traffic Equipment Co., Ltd. |